Dec 18 16:06:32.589 INFO checking git-workarea-3.1.2 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:06:32.590 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/git-workarea/3.1.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:06:32.787 INFO [stdout] 91c220f4919a9b5242a92534240a3cb9a64a8564205cdc9298b6f6c593c3c064
Dec 18 16:06:32.790 INFO running `"docker" "start" "-a" "91c220f4919a9b5242a92534240a3cb9a64a8564205cdc9298b6f6c593c3c064"`
Dec 18 16:06:33.477 INFO [stderr]     Checking git-workarea v3.1.2 (/opt/crater/workdir)
Dec 18 16:06:35.025 INFO [stderr] warning: variable does not need to be mutable
Dec 18 16:06:35.025 INFO [stderr]    --> src/prepare.rs:111:17
Dec 18 16:06:35.026 INFO [stderr]     |
Dec 18 16:06:35.026 INFO [stderr] 111 |             let mut commit_tree_stdin =
Dec 18 16:06:35.026 INFO [stderr]     |                 ----^^^^^^^^^^^^^^^^^
Dec 18 16:06:35.026 INFO [stderr]     |                 |
Dec 18 16:06:35.026 INFO [stderr]     |                 help: remove this `mut`
Dec 18 16:06:35.026 INFO [stderr]     |
Dec 18 16:06:35.026 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 16:06:35.026 INFO [stderr] 
Dec 18 16:06:35.555 INFO [stderr] warning: variable does not need to be mutable
Dec 18 16:06:35.555 INFO [stderr]    --> src/prepare.rs:111:17
Dec 18 16:06:35.555 INFO [stderr]     |
Dec 18 16:06:35.555 INFO [stderr] 111 |             let mut commit_tree_stdin =
Dec 18 16:06:35.555 INFO [stderr]     |                 ----^^^^^^^^^^^^^^^^^
Dec 18 16:06:35.555 INFO [stderr]     |                 |
Dec 18 16:06:35.555 INFO [stderr]     |                 help: remove this `mut`
Dec 18 16:06:35.555 INFO [stderr]     |
Dec 18 16:06:35.555 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 16:06:35.555 INFO [stderr] 
Dec 18 16:06:35.820 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
Dec 18 16:06:36.632 INFO running `"docker" "inspect" "91c220f4919a9b5242a92534240a3cb9a64a8564205cdc9298b6f6c593c3c064"`
Dec 18 16:06:36.801 INFO running `"docker" "rm" "-f" "91c220f4919a9b5242a92534240a3cb9a64a8564205cdc9298b6f6c593c3c064"`
Dec 18 16:06:37.148 INFO [stdout] 91c220f4919a9b5242a92534240a3cb9a64a8564205cdc9298b6f6c593c3c064